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Table 4 Probabilities of overweight/obesity at 15–17 years (adult BMI ≥ 25 kg/m2), based at BMI at 2–4 and 5–7 years

From: Tracking of overweight and obesity from early childhood to adolescence in a population-based cohort – the Tromsø Study, Fit Futures

   Boys Girls
Age (Years) Corresponding adult BMI Child BMI P 95 % CI Child BMI P 95 % CI
2.5 18.5 15.02 0.11 (0.08–0.15) 14.77 0.10 (0.07–0.14)
23.0 17.28 0.27 (0.23–0.32) 17.01 0.24 (0.21–0.29)
25.0 18.09 0.35 (0.28–0.42) 17.84 0.32 (0.27–0.39)
27.0 18.80 0.43 (0.33–0.53) 18.59 0.41 (0.32–0.50)
30.0 19.73 0.54 (0.40–0.67) 19.57 0.52 (0.39–0.65)
35.0 20.95 0.68 (0.50–0.81) 20.90 0.67 (0.50–0.81)
6.0 18.5 14.06 0.04 (0.03–0.07) 13.85 0.04 (0.02–0.06)
23.0 16.52 0.23 (0.19–0.28) 16.32 0.21 (0.17–0.25)
25.0 17.52 0.39 (0.32-0.47) 17.33 0.36 (0.29–0.43)
27.0 18.45 0.57 (0.46–0.67) 18.28 0.54 (0.43–0.64)
30.0 19.76 0.78 (0.66–0.87) 19.61 0.76 (0.63–0.86)
35.0 21.69 0.95 (0.86–0.98) 21.61 0.94 (0.85–0.97)
  1. A sub study of The Tromsø Study: Fit Futures N = 532: 279 boys, 253 girls
  2. Predicted values are calculated with mean gender and mean age at measurement in the models
  3. BMI body mass index, CI confidence interval, P probability
  4. Child BMI: BMI according to the International Obesity Taskforce’s age- and sex-specific cut-off values in children 2–18 years [28]